# init(_:using:_:) Create a Coder protocol. ``` init(_ type: Sending.Type, using: CoderType, @ProtocolStackBuilder _ builder: () -> BelowProtocol) where BelowProtocol : StreamProtocol ``` ## Parameters `type` The Codable type that will be sent and received. `builder` The protocol stack below Coder. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)